Don't fall for that trick. The only thing about AI you want or don't want is when you
log on to a search engine or dedicated app.  You control that, don't let your computer......

As far as screen size, a 15.6 " may be good if you leave it on the desk.  For travel
look at 14" or smaller.  If using windows, get a windows computer, don't get a Chromebook.
Make sure it has the ports you need, such as USB ports, get 2 at a minimum, one for a
mouse and that lets you plug in your printer.  Touch screen maybe, but not necessary, 
my latest one is not, I got more resolution without.  I use a mouse.

One thing I like is a lighted keyboard, it really helps.